CN102862475A - Electric automobile speed changer and speed changing method thereof - Google Patents
Electric automobile speed changer and speed changing method thereof Download PDFInfo
- Publication number
- CN102862475A CN102862475A CN2012103848494A CN201210384849A CN102862475A CN 102862475 A CN102862475 A CN 102862475A CN 2012103848494 A CN2012103848494 A CN 2012103848494A CN 201210384849 A CN201210384849 A CN 201210384849A CN 102862475 A CN102862475 A CN 102862475A
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- torque converter
- electric automobile
- oil pump
- transformer
- turbine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/06—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the hydrokinetic type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H2200/00—Transmissions for multiple ratios
- F16H2200/0021—Transmissions for multiple ratios specially adapted for electric vehicles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Gearings (AREA)
- Structure Of Transmissions (AREA)
Abstract
The invention discloses an electric automobile speed changer and a speed changing method thereof. The electric automobile speed changer comprises a hydraulic torque converter with the locking function, an oil pump, an oil pump motor, a controller, a speed reducing mechanism and a differential mechanism. The hydraulic torque converter comprises a pump wheel, a worm wheel, an input shaft, an output shaft and the like, a driving motor is connected with the pump wheel through the input shaft, and the worm wheel is connected with the output shaft. In most cases, the hydraulic torque converter is located in the locking state, the torque of the motor is in direction transmission when passing through the hydraulic torque converter, and transmission efficiency is high. When an electric automobile is in low-speed climbing or rapid acceleration start state, the hydraulic torque converter is controlled to be in an unlocking state, the hydraulic torque converter is provided with hydraulic torque changing function, the torque is driven to be improved, climbing performance and acceleration performance are improved simultaneously, and lock-rotor state of the motor is avoided. The electric automobile speed changer is simple in structure and convenient to control, can improve the climbing performance and the acceleration performance of the electric automobile, and enhances reliably of the automobile.
Description
Technical field
The present invention relates to a kind of Automotive transmission and method for changing speed, particularly relate to change-speed box and method for changing speed thereof that a kind of suitable pure electric automobile uses.
Background technology
Developing energy-conservation and new-energy automobile has become the inevitable choice of China's energy strategy, current emphasis is to advance pure electric automobile and plug-in hybrid-power automobile industrialization, popularize non-plug-in hybrid-power automobile, energy-saving IC engine automobile, promote China's automobile industry overall technology level.
The speed change of electronlmobil mainly contains following several scheme at present.Scheme one is to adopt fixedly reduction ratio; Scheme two is to adopt a two-speed transmission; Scheme three is to adopt the change-speed box of traditional fuel vehicle to carry out speed change.Because it is wider that motor itself has between high efficient area, the change-speed box of traditional fuel vehicle generally has four to seven gears, and the speed change of using it for pure electric automobile seems and wastes one's talent on a petty job.If adopt fixedly reduction ratio, drive system structure has been simply, but can embody acceleration capability and the relatively poor defective of grade climbing performance.Therefore there is the people to propose the scheme of two-speed transmission, uses the big retarding ratio during low speed driving, realize preferably starting performance, use little reduction ratio when running at high speed, satisfy the requirement of the max speed.
For example, patent documentation CN101780768A discloses a kind of two-speed automatic transmission for elec. vehicle.
This electric automobile gear device comprises input shaft, tween drive shaft, output shaft, power-transfer clutch, drg, sun and planet gear and diff.The sun wheel of this change-speed box sun and planet gear is connected respectively input shaft and tween drive shaft with pinion carrier, power-transfer clutch and drg all removably connect with the internally toothed annulus of sun and planet gear, tween drive shaft is connected with output shaft, output shaft is connected with diff, power is delivered to wheel by diff, drives Vehicle Driving Cycle.This change-speed box designs ingenious, simple for structure by a sun and planet gear conversion gear.This change-speed box has reduced the requirement of elec. vehicle to motor to a certain extent, has increased the time of drive motor at the high efficiency section operation, has improved continual mileage.
The deficiency of this electric automobile gear device mainly contains following 2 points: the first, the rotor rotation speed change is large when gearshift, and the rotor inertia of rotor changes also greatly, causes the wearing and tearing of friction lining of brakes and clutches also larger; Machine operation causes easily that at the stall state motor is burned when the second, starting to walk.
Market in urgent need is a kind of simple in structure, can solve the electronlmobil dedicated transmission of above-mentioned deficiency.
Summary of the invention
Purpose of the present invention will overcome the deficiencies in the prior art exactly, and a kind of simple, failure-free electric automobile gear device and method for changing speed thereof are provided.
For solving above technical matters, the technical solution adopted in the present invention is: a kind of electric automobile gear device, comprise speed reduction gearing, diff, its constructional feature is, comprise that also one has the turbine transformer of latch functions, described turbine transformer one end links to each other with the drive motor of electronlmobil, and the other end is connected with the input gear of described speed reduction gearing, described speed reduction gearing is connected with diff by output shaft, thereby outputting power is to wheel.
Described turbine transformer comprises the turbine transformer input shaft, Output Shaft of Hydraulic Torque Converter, transformer turbine and face of fluid torque converter; Wherein, described turbine transformer input shaft one end is connected with drive motor, and the other end is connected with described face of fluid torque converter; Described Output Shaft of Hydraulic Torque Converter one end is connected with described transformer turbine, and the other end is connected with the speed reduction gearing input gear.
Described turbine transformer adopts oil pump that release pressure is provided, and described oil pump is driven by Oil pump electrical machinery, can realize solution lock control to turbine transformer by a controller control oil pump motor.
Described speed reduction gearing can adopt gear cluster also can adopt sun and planet gear.
A kind of method of utilizing above-mentioned electric automobile gear device to realize electric automobile gear may further comprise the steps:
1. the output torque of drive motor is passed to from described turbine transformer input shaft and is passed described face of fluid torque converter;
2. described controller judges whether to control described Oil pump electrical machinery according to the signal data that collects and drives described oil pump release or the described turbine transformer of locking;
3. be in low speed climbing or suddenly accelerate starting and wait need to large driving torque the time when vehicle, control described Oil pump electrical machinery by controller and drive oil pump, release pressure is provided for the fluid power tor-con, make turbine transformer be operated in released state, transmission system is operated in the bending moment shelves, the torque that acts on the face of fluid torque converter is delivered to transformer turbine through behind the hydraulic moment changeable, then is delivered to speed reduction gearing from Output Shaft of Hydraulic Torque Converter;
4. when Vehicle Driving Cycle does not need large driving torque, described controller is controlled described Oil pump electrical machinery and is quit work, discharge release pressure, make turbine transformer be operated in lockup state, the torque that acts on the face of fluid torque converter is directly delivered to transformer turbine, then is delivered to speed reduction gearing from Output Shaft of Hydraulic Torque Converter.
Below the technical solution adopted in the present invention is done further narration: described electric automobile gear device comprises turbine transformer, oil pump, Oil pump electrical machinery, controller, speed reduction gearing, the diff of locking function.
The pump impeller of described turbine transformer links to each other with the output shaft of driving motor of electric vehicle, and the turbine of turbine transformer links to each other with speed reduction gearing, and speed reduction gearing links to each other with diff.The driving torque of motor is delivered to speed reduction gearing through behind the turbine transformer, passes through diff rear drive Vehicle Driving Cycle again.Described turbine transformer is the turbine transformer with latch functions, during converter lockup, and pump impeller and the turbine realization direct-drive that links together, the drive motor torque is through turbine transformer, be passed to speed reduction gearing, driving efficiency is high, and most pure motor driving is with this mode transmission.In the slow process of accelerating and major part travel in the control converter lockup, to realize high efficiency pure motor driving.Simultaneously, turbine transformer can carry out unlocking operation according to the needs in the driving process.After the turbine transformer release, motor-driven torque to input has liter to turn round function, improved torque, thereby promote hill climbing ability and improve starting performance, simultaneously also can avoid machine operation at the stall state, reduce the heating of motor, avoided motor to be burned, improved the reliability of electric powered motor and driving system.
With respect to the electronlmobil without speed-changing mechanism, adopt this programme change-speed box only to increase a turbine transformer with latch functions, but can solve well the problem of starting and climbing.It is simple in structure, compact with respect to two grades of formula change-speed boxs, and serviceability is high.
The present invention has utilized the bending moment function of turbine transformer preferably, behind the releasing lockup state, with torque magnification, has improved the grade climbing performance of battery-driven car by turbine transformer when climbing.When anxious acceleration starting, with torque magnification, improved the starting acceleration performance of battery-driven car by turbine transformer.Under frequent state, turbine transformer is in lockup state, and whole transmission system efficiency is high.By the employing of unlocking function, avoided machine operation at the stall state, improved automobile reliability.
Description of drawings
Fig. 1 is the system architecture scheme drawing of the embodiment of the invention;
Fig. 2 is the workflow scheme drawing of change-speed box of the present invention.
In the accompanying drawings:
1-turbine transformer input shaft; The 2-Output Shaft of Hydraulic Torque Converter; The 3-transformer turbine; The 4-face of fluid torque converter; The 5-oil pump; The 6-controller; The 7-Oil pump electrical machinery; The 8-speed reduction gearing; The 9-diff.
The specific embodiment
Below in conjunction with accompanying drawing embodiments of the present invention are further described.
Shown in accompanying drawing 1, a kind of electric automobile gear device described in the invention comprises turbine transformer input shaft 1; Output Shaft of Hydraulic Torque Converter 2; Transformer turbine 3; Face of fluid torque converter 4; Oil pump 5; Controller 6; Oil pump electrical machinery 7; Speed reduction gearing 8; Diff 9.
Described turbine transformer input shaft 1 one ends are connected with drive motor, and the other end is connected with face of fluid torque converter 4; Described Output Shaft of Hydraulic Torque Converter 2 one ends are connected with transformer turbine 3, and the other end is connected with speed reduction gearing 8 input gears; The speed reduction gearing output shaft is connected with diff 9.The output torque of motor is delivered to face of fluid torque converter 4 from turbine transformer input shaft 1, when converter lockup, the torque that acts on the face of fluid torque converter 4 is directly delivered to transformer turbine 3, then is delivered to speed reduction gearing 8 from Output Shaft of Hydraulic Torque Converter 2; When the turbine transformer release, to transformer turbine 3, be delivered to speed reduction gearing 8 through Output Shaft of Hydraulic Torque Converter 2 after acting on torque on the face of fluid torque converter 4 and transmitting through hydraulic moment changeable.The torque that is delivered to speed reduction gearing 8 is delivered to diff 9 by gear transmission, through exporting to drive Vehicle Driving Cycle behind the diff 9.
Described turbine transformer adopts oil pump 5 to provide oil pressure to the execution that fluid power tor-con unlocking/locking ends control action, drives oil pump 5 by Oil pump electrical machinery 7 and provides pressure to oil circuit.
Described speed reduction gearing 8 can be realized with gear transmission as shown in Figure 1, also can realize with sun and planet gear.
When vehicle is in low speed climbing or suddenly accelerates starting and wait need to large driving torque the time, rotate by controller 6 control oil pump motors 7, drive oil pump 5 work and provide release pressure to the fluid power tor-con, be operated in the bending moment state after making the turbine transformer release, promote driving torque, improved car load grade climbing performance and acceleration capability.
When Vehicle Driving Cycle does not need large driving torque, make turbine transformer be operated in lockup state, transmission system is operated in direct speed, by direct-drive, has improved driving efficiency.
The change-speed box workflow as shown in Figure 2, after program begins, gather the parameters such as acceleration pedal signal, the speed of a motor vehicle, motor speed, motor temperature, then judge whether to be in the anxious starting operating mode of accelerating, if then control the turbine transformer release, if not then judge whether to be in low speed climbing operating mode, if then control the turbine transformer release, if not then control turbine transformer at lockup state, repeat above-mentioned steps until finish.
When change-speed box of the present invention used direct speed, electronlmobil had higher driving efficiency, owing to be operated in direct speed most of in the actual travel process of vehicle the time, employing of the present invention can improve the driving efficiency of electronlmobil, extending driving range.
When change-speed box of the present invention uses the bending moment shelves, both can realize promoting the function of torque, and can avoid again motor by stall simultaneously.When improving grade climbing performance and acceleration capability, improved the reliability of electronlmobil, prolonged service life.
Generally speaking, electric automobile gear device of the present invention can be realized direct speed and two kinds of transmission modes of hydraulic moment changeable shelves, and is simple in structure, and control is convenient, and can satisfy preferably electronlmobil to the requirement of acceleration capability, grade climbing performance, continual mileage, especially be suitable for low-speed pure electric automobile.
The content that above-described embodiment is illustrated should be understood to these embodiment and only is used for being illustrated more clearly in the present invention, limit the scope of the invention and be not used in, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the modification of the various equivalent form of values of the present invention.
Claims (5)
1. electric automobile gear device, comprise speed reduction gearing (8), diff (9), it is characterized in that, comprise that also one has the turbine transformer of latch functions, described turbine transformer one end links to each other with the drive motor of electronlmobil, the other end is connected with the input gear of described speed reduction gearing (8), and described speed reduction gearing (8) is connected with diff (9) by output shaft, thereby outputting power is to wheel.
2. a kind of electric automobile gear device according to claim 1 is characterized in that, described turbine transformer comprises turbine transformer input shaft (1), Output Shaft of Hydraulic Torque Converter (2), transformer turbine (3) and face of fluid torque converter (4); Wherein, described turbine transformer input shaft (1) one end is connected with drive motor, and the other end is connected with described face of fluid torque converter (4); Described Output Shaft of Hydraulic Torque Converter (2) one ends are connected with described transformer turbine (3), and the other end is connected with speed reduction gearing (7) input gear.
3. a kind of electric automobile gear device according to claim 1, it is characterized in that, described turbine transformer adopts oil pump (5) that release pressure is provided, described oil pump (5) is driven by Oil pump electrical machinery (7), can realize solution lock control to turbine transformer by a controller (6) control oil pump motor (7).
4. a kind of electric automobile gear device according to claim 1 is characterized in that, described speed reduction gearing (8) can adopt gear cluster also can adopt sun and planet gear.
5. a method of utilizing the described electric automobile gear device realization of any one electric automobile gear in the claim 1～4 is characterized in that, may further comprise the steps:
1. the output torque of drive motor is passed to from described turbine transformer input shaft and is passed described face of fluid torque converter;
2. described controller (6) judges whether to control described Oil pump electrical machinery (7) according to the signal data that collects and drives (5) release of described oil pump or the described turbine transformer of locking;
3. be in low speed climbing or suddenly accelerate starting and wait need to large driving torque the time when vehicle, control described Oil pump electrical machinery (7) by controller (6) and drive oil pump (5), release pressure is provided for the fluid power tor-con, make turbine transformer be operated in released state, transmission system is operated in the bending moment shelves, the torque that acts on the face of fluid torque converter (4) is delivered to transformer turbine (3) through behind the hydraulic moment changeable, then is delivered to speed reduction gearing (8) from Output Shaft of Hydraulic Torque Converter (2);
4. when Vehicle Driving Cycle does not need large driving torque, described controller (6) is controlled described Oil pump electrical machinery (7) and is quit work, discharge release pressure, make turbine transformer be operated in lockup state, the torque that acts on the face of fluid torque converter (4) is directly delivered to transformer turbine (3), then is delivered to speed reduction gearing (8) from Output Shaft of Hydraulic Torque Converter (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210384849.4A CN102862475B (en) | 2012-10-11 | 2012-10-11 | A kind of electric automobile gear device and method for changing speed thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210384849.4A CN102862475B (en) | 2012-10-11 | 2012-10-11 | A kind of electric automobile gear device and method for changing speed thereof |
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| Publication Number | Publication Date |
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| CN102862475A true CN102862475A (en) | 2013-01-09 |
| CN102862475B CN102862475B (en) | 2016-08-17 |
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| CN201210384849.4A Active CN102862475B (en) | 2012-10-11 | 2012-10-11 | A kind of electric automobile gear device and method for changing speed thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105711411A (en) * | 2016-01-27 | 2016-06-29 | 冯林 | Stepless speed changing wheel |
| CN106864260A (en) * | 2015-12-11 | 2017-06-20 | 北汽福田汽车股份有限公司 | Rear axle drive structure and vehicle |
| CN109555853A (en) * | 2017-09-27 | 2019-04-02 | 丰田自动车株式会社 | Electric vehicle |
| CN109578575A (en) * | 2019-01-02 | 2019-04-05 | 盛瑞传动股份有限公司 | Automatic transmission control method |
| CN110469648A (en) * | 2019-07-16 | 2019-11-19 | 贵州凯星液力传动机械有限公司 | A kind of novel tick-over Hydrodynamic transmission and its control method |
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| JP2003148590A (en) * | 2001-11-12 | 2003-05-21 | Yutaka Giken Co Ltd | Fluid transmission gear with lock-up clutch |
| JP2007223588A (en) * | 2006-02-22 | 2007-09-06 | Ford Global Technologies Llc | Automobile and method for switching torque transmission path of automobile |
| CN101646884A (en) * | 2007-09-19 | 2010-02-10 | 爱信艾达株式会社 | Control device for vehicle |
| CN102358158A (en) * | 2011-08-05 | 2012-02-22 | 上海中科深江电动车辆有限公司 | Hybrid drive system of heavy vehicle |
| CN102358159A (en) * | 2011-08-05 | 2012-02-22 | 上海中科深江电动车辆有限公司 | Hybrid drive system with hydraulic torque converter |
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2012
- 2012-10-11 CN CN201210384849.4A patent/CN102862475B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003148590A (en) * | 2001-11-12 | 2003-05-21 | Yutaka Giken Co Ltd | Fluid transmission gear with lock-up clutch |
| JP2007223588A (en) * | 2006-02-22 | 2007-09-06 | Ford Global Technologies Llc | Automobile and method for switching torque transmission path of automobile |
| CN101646884A (en) * | 2007-09-19 | 2010-02-10 | 爱信艾达株式会社 | Control device for vehicle |
| CN102358158A (en) * | 2011-08-05 | 2012-02-22 | 上海中科深江电动车辆有限公司 | Hybrid drive system of heavy vehicle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106864260A (en) * | 2015-12-11 | 2017-06-20 | 北汽福田汽车股份有限公司 | Rear axle drive structure and vehicle |
| CN105711411A (en) * | 2016-01-27 | 2016-06-29 | 冯林 | Stepless speed changing wheel |
| CN105711411B (en) * | 2016-01-27 | 2020-12-11 | 嘉兴市昶兴喷织有限公司 | Stepless speed change wheel |
| CN109555853A (en) * | 2017-09-27 | 2019-04-02 | 丰田自动车株式会社 | Electric vehicle |
| CN109578575A (en) * | 2019-01-02 | 2019-04-05 | 盛瑞传动股份有限公司 | Automatic transmission control method |
| CN110469648A (en) * | 2019-07-16 | 2019-11-19 | 贵州凯星液力传动机械有限公司 | A kind of novel tick-over Hydrodynamic transmission and its control method |
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| Publication number | Publication date |
|---|---|
| CN102862475B (en) | 2016-08-17 |
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